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20202022131 = 317834772507
BaseRepresentation
bin10010110100001000…
…100110010011110011
31221010220200001111220
4102310020212103303
5312333204202011
613140343240123
71313424232464
oct226410462363
957126601456
1020202022131
118627573265
123ab9749043
131b9c4bc465
14d99072d6b
157d3874506
hex4b42264f3

20202022131 has 16 divisors (see below), whose sum is σ = 28864128384. Its totient is φ = 12523055744.

The previous prime is 20202022103. The next prime is 20202022187. The reversal of 20202022131 is 13122020202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20202022131 - 215 = 20201989363 is a prime.

It is a super-2 number, since 2×202020221312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20202022131.

It is not an unprimeable number, because it can be changed into a prime (20202022931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2382021 + ... + 2390486.

It is an arithmetic number, because the mean of its divisors is an integer number (1804008024).

Almost surely, 220202022131 is an apocalyptic number.

20202022131 is a deficient number, since it is larger than the sum of its proper divisors (8662106253).

20202022131 is a wasteful number, since it uses less digits than its factorization.

20202022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772610.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20202022131 its reverse (13122020202), we get a palindrome (33324042333).

The spelling of 20202022131 in words is "twenty billion, two hundred two million, twenty-two thousand, one hundred thirty-one".

Divisors: 1 3 17 51 83 249 1411 4233 4772507 14317521 81132619 243397857 396118081 1188354243 6734007377 20202022131